摘要
针对立式钢制储罐模型,进行了无隔震和有橡胶基底隔震体系振动台的动力特性及地震响应模拟试验研究.结果表明:橡胶隔震能够有效地降低中短周期地震动对上部结构的动力响应,减震效果明显;橡胶隔震对液体表面的晃动有影响,延长液体表面的晃动周期,不同地震动隔震对波高的影响不同;橡胶隔震体系在有效隔震刚度段内,等效刚性质点处加速度降低50%以上,液固耦合质点处加速度降低77%,晃动质点处加速度降低81%,上部结构体系近似平动,相对位移响应较小;橡胶隔震对长周期地震动仅在一定条件下有控制作用.
Aimed at the model of the vertical steel storage tank, the experimental research on the dynamic character and seismic response of the controlled and non-controlled system is carried out at the vibration platform. For the rubber base isolation system, the seismic response caused by the medium and short periods earthquake can be effectively reduced. The shaking of the liquid surface is influenced by the rubber base isolation and the shaking periods of the liquid surface is extended. When the earthquake for the base isolation system is different, the wave height is different. In the available extension of the base isolation stiffness, the acceleration can be reduced by 50% at the point of stiffness particle, by 77% at the point of the liquid-solid coupling point and by 81% at the point of swashing particle. The movement of above structure is close to translation and the comparative displacement is small. The earthquake response of long period can be controlled by the base isolation system only at certain conditions.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2005年第6期806-809,共4页
Journal of Harbin Institute of Technology
基金
黑龙江省自然科学基金资助项目(E9924).
关键词
模型
振动台
地震响应
试验
Acceleration
Dynamics
Earthquake effects
Mathematical models
Rubber
Stiffness
Storage (materials)
Surfaces
Vibrations (mechanical)
